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Verify IP and Perform Release/Renew in the Command Prompt


All versions of Windows allow you to use the command prompt (also known by some as the DOS window) to verify the ip address, and to perform release/renew functions.  Some users prefer this method, considering more reliable than the graphical based methods.  We will be concerned with using the command prompt in Win 2000 and XP only, as winipcfg is the primary method of ip verification in Win 9x/ME.

Note:  Command prompt ip verification is the only way to check the ip address in Win 2000.  The commands are the same for both 2000 and XP.



The IP verification and release/renew process in the command window

Scenarios you will encounter

Some notes



Simulation
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Verifying the IP address and performing release/renew functions in the Command Prompt.

 



The IP Verification and Release/Renew Process in the Command Window
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-  This holds for Windows NT 4.0, Windows 2000, and Windows XP.




-  Go to Start > Run.  Type "cmd" (short for "command") into the Run window. 
- The Command Prompt window will open. Commands will all be typed at a command prompt.
-  To check the IP address, type, "ipconfig".
-  To check the IP address, along with the hardware address, and advanced info, type, "ipconfig/all".
-  To release the current IP address, type, "ipconfig /release".
-  To renew the IP address, type, "ipconfig/renew".



There are several different scenarios you will encounter
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- The ip address starts with 137 and is valid.
- The ip address starts with 192, and is valid but the student has to autoregister.
- The ip address starts with 169 or 0, and the connection is bad.

To see what course of action to take based on the ip address, click here.
 

Some Notes
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- The response you will be presented with to the commands you enter will vary depending on the system you use.
- In Win XP, if the connection is bad, you may receive all zero's for an IP, you may receive no IP information, or you may receive an error.


 

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Last Updated: Thursday, July 24, 2003 2:12 PM


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